Automatic diving toy.



' No. 670,727. Patented Mar. 26, I90l.

S. G. POLL AUTOMATIC DIVING TOY.

(A umion filed rm 1% 1900.,

(No Model.)

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UNITED STATES SEBASTIEN GASTON POLI, OF PARIS, FRANCE.

AUTOMATIC DIVING TOY.

SPECIFICATION forming part of Letters Patent No. 670,727, dated March 26, 1901.

Application filed February 14, 1900. fierial No 5,195. \No model.)

To all whom it may concern:

Beit known that LSEBASTIEN GASTON PoLI, civil engineer, a citizen of the Republic of France, residing at Paris, France, have invented a certain new and useful Automatic Diving Toy, of which the following is a full, clear, and exact specification.

This invention relates to a diving toy which consists in a device of the shape of a boat, a

fish, a doll, &c., capable of executing a series of successive plunges and emersions.

I will describe an object in the shape of a submarine boat, as illustrated on the annexed drawings.

Figure 1 is a longitudinal part-sectional view of a boat according to my invention. Fig. 2 is a similar view of a modification, and Fig. 3 is a sectional view of a part of a still further modification.

In the simplest form it consists, Fig. 1, of a shell generally resembling a spindle, as do some submarine boats, comprising two watertight compartments a a, between which is situated a chamber 1). This chamber b communicates with the exterior, first, by means of an opening 0 at its upper part, and, secondly, by means of another opening 01 at its lower part.

In order to cause this toy to work, the chamber 12 is filled with a chemical substance or mixture capable of upon contact with water evolving gas-for instance, a mixture of tartaric acid and bicarbonate of soda. When the boat is launched and floats upon the water, the latter enters at d into the chamberb. This water increases the weight of the boat, and the latter sinks or dives; but upon the contact of the water with the chemical contained in chamber 5 a gas is formed, (carbonic acid in the case of a mixture of tartaric acid and sodium bicarbonate,) which gas escapes through the outlet 0, while it drives back through the opening (1 the water which has entered the chamber 1), and the boat being relieved of this weight ascends to the surface. Its rise or emersion having finished and the pressure of gas diminishing, water again enters by the opening d and again attains the chamber 12, and, as before explained, the boat is once more immerged and afterward rises to the surface. There will thus be produced a series of successive immersions and emersions until the whole of the substance contained in the chamber has been utilized to evolve The boat then comes to the surface or remains at a certain depth, the capacity of the water-tight compartments being suit-ably determined beforehand.

This toy can be fitted with the usual accessories of submarine boatssuch as torpedotube, screw-propeller, conning-tower, handrail, and the like. It is suitably balanced by means of a keel or weights inserted along its hull.

I may modify the construction of my invention in several ways. Thus, for example, there may be one or more chambers 11 and there may be one or more openings 0 and d at top and bottom, respectively.

On Fig. 2 I have shown a modified form of my invention. Two tubes 6 6, leading to the ends of the shell, deliver exteriorly at f f. With this arrangement according to the exact portions of the mass of chemical acted on by the water gas is evolved either by the upper opening 0 or by the tubesf, or by one of them only, which will impart to the boat various movements.

Fig. 3 relates to another modification. Underneath the reaction-chamber b is an airchamber g, which is separated therefrom by a partition h. From chamber 9 there passes a pipe 1', which rises into the reaction-chamber b to the level, or to a little above the level of the chemical. Within this pipe 1 passes a rod 7', which at its upper part is furnished with a valve or cap 70, capable of bearing against its seat 1, and thereby opening or cutting off communication from the exterior to or with the reaction-chamber. This rod 7' extends to the lower part of the air-chamber. This rod, when the boat reaches the bottom, is raised and abuts against the shell of the boat and then cuts oif the opening Z, thus closing the reaction-chamber at its upper part. The gas escapes by the pipe i, forces back the water, and the boat rises. When it has risen and the pressure of gas lessens, the rod 2' redescends, and the boat again sinks or dives. It will be remarked that the reaction-chamber contains a small orifice m, which remains permanently open.

Having thus described my invention, what I claim is- 1. A toy comprising a receiver, having one or more Water-tight compartments, a chamber containing a chemical adapted to evolve gas upon contact with water, said chamber having free openings to the exterior at the top for the passage of gas and at the bottom for the inlet of water whereby the receiver is caused to dive and rise.

2. A toy comprising a receiver, having one or more Water-tight compartments, a chamber containing a chemical adapted to evolve gas upon contact with water, said chamber having free openings to the exterior at the top for the passage of gas and at the bottom for the inlet of Water whereby the receiver is caused to dive and rise, and means to cause name to this specification in the presence of 30 two subscribing witnesses.

SEBASTIEN GASTON POLI.

Witnesses:

GUSTAVE DUMONT, EDWARD P. MACLEAN. 

